Bait and switch marketing tactics

on 14 August 2015 I booked a flight from Jhb-Hre return for 28/08/2015 at 06:20 returning 31/08/2015 08:25. At Hre airport on 31/08/2015 (Monday) I arrived for checkin only to be told the flight had been rescheduled for operational reasons and 'emails' had been sent the day before (on Sunday).We had to wait an extra 3 and a half hours before check in, no food offered either at check in or on the plane when it arrived. On boarding the plane I commented to the airline host that the delay was not appreciated, he asked what I meant by that, and upon explaining he stated 'but there is no Monday morning flight with FlyAfrica at 08:25, and there never was'!! It seems I was not the only passenger affected by this so-called operational change, the morning flight apparently never existed, and Fly Africa took passengers for the sake of filling the 11am flight, *****. I missed not only a work commitment but an important interview. I have since emailed the airline on 31/08/2015, who responded on 02/09/2015 'With reference to your below email please note that we are investigating the details and contact you shortly. This is an acknowledgment receipt of your email.' To date, no further response.